Quick search
Go!

ABOUT SELECTIVITY OF NUMERICAL PROTECTIONS AGAINST EARTH FAULTS IN MEDIUM VOLTAGE NETWORKS GROUNDED WITH PETERSEN COIL


GHEORGHE HAZI 1, ANETA HAZI 1, SORIN-GABRIEL VERNICA 1
1. “Vasile Alecsandri”University of Bacău, Calea MărăƟeƟti 156,Bacău, 600115, Romñnia

Issue:

PLUMEE, Number 1, Volume I

Section:

Issue No. 1 - Volume 3(2013)
Download the full manuscript(authorisation required)

Abstract:

The paper analyzes the conditions for the functioning of basic numerical protection earth fault in medium voltage networks with earthed neutral Petersen coil. Analysis refers to the number of cell terminals and not to the protection at level of medium voltage substation. Selectivity conditions are presented. It is shown how a ABB numerical protection can be set to run selective. All analyzes are based on a concrete example, using a network of 20 kV with cable lines.

Keywords:

earth fault protection, Petersen coil, numerical protection.

Code [ID]:

PLUMEE201301V01S01A0022 [0003978]

Full paper:

Download pdf


Copyright (c) 1995-2007 University of Bacău